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30186-45-9

1-isopropyl-1H-pyrrole-3-carbaldehyde(SALTDATA: FREE) synthesis

6synthesis methods
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Yield:23373-77-5 14% ，30186-45-9 69%

Reaction Conditions:

Stage #1: diphenylformamidewith trichlorophosphate in 1,1-dichloroethane;Reflux;Vilsmeier-Haack reaction;
Stage #2: N-isopropylpyrrole in 1,1-dichloroethane; for 2 h;Reflux;Vilsmeier-Haack reaction;
Stage #3: with water;sodium acetateregioselective reaction;

References:

Ilyin, Petrv.;Pankova, Alenas.;Kuznetsov, Mikhail A. [Synthesis,2012,vol. 44,# 9,p. 1353 - 1358] Location in patent:experimental part